Quantum anomalous Hall crystal at fractional filling of moiré superlattices
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929462351757312 |
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| author | Sheng, D. N. Reddy, Aidan P. Abouelkomsan, Ahmed Bergholtz, Emil J. Fu, Liang |
| author_facet | Sheng, D. N. Reddy, Aidan P. Abouelkomsan, Ahmed Bergholtz, Emil J. Fu, Liang |
| contents | We predict the emergence a state of matter with intertwined ferromagnetism, charge order and topology in fractionally filled moiré superlattice bands. Remarkably, these quantum anomalous Hall crystals exhibit a quantized integer Hall conductance that is different than expected from the filling and Chern number of the band. Microscopic calculations show that this phase is robustly favored at half-filling ($ν=1/2$) at larger twist angles of the twisted semiconductor bilayer $t$MoTe$_2$ |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_17832 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum anomalous Hall crystal at fractional filling of moiré superlattices Sheng, D. N. Reddy, Aidan P. Abouelkomsan, Ahmed Bergholtz, Emil J. Fu, Liang Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons We predict the emergence a state of matter with intertwined ferromagnetism, charge order and topology in fractionally filled moiré superlattice bands. Remarkably, these quantum anomalous Hall crystals exhibit a quantized integer Hall conductance that is different than expected from the filling and Chern number of the band. Microscopic calculations show that this phase is robustly favored at half-filling ($ν=1/2$) at larger twist angles of the twisted semiconductor bilayer $t$MoTe$_2$ |
| title | Quantum anomalous Hall crystal at fractional filling of moiré superlattices |
| topic | Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2402.17832 |